Question

Tony has 6 dollars in change in his car. Every time he drives to visit his grandma, he pays $1.25 in tolls. Which graph represents the change Tony has in his car?

Answer 1

You have initially $6 to start the problem. That's before the first visit. So let's make that y=6 for t=0, then t=1 you are left with an amount equal to previous y minus 1.25,. Second visit you will again substract 1.25 to the remaining amount. And visit the same thing happens until of course Tony is out money. That will happens when he visits her 8th visit. So you can draw a line that starts in 0,6 and ends in 8,0. Every unit in the X axis is a visit, and every unit in Y is a dollar.

Answer 2

thank you